Why are English days named what they are?

Charlotte Guest
Charlotte Guest
Two friends stood over a book in a library reading it and smiling
Reading time: 4 minutes

Ever wondered why Monday is called Monday or how Wednesday got its name? The names of the days of the week in English have fascinating origins, rooted in ancient history and steeped in mythology. Understanding these origins not only enriches our language ability but also provides intriguing insights into cultural heritage.

Origins of the days of the weeks names
Play
Privacy and cookies

By watching, you agree Pearson can share your viewership data for marketing and analytics for one year, revocable by deleting your cookies.

Origins of the seven-day week

The concept of a seven-day week has ancient origins, tracing back to the Babylonians around 1500 BCE. The Babylonians, keen astronomers, divided their lunar cycle into four weeks of seven days each, aligning with the phases of the moon. This practice was later adopted by the ancient Greeks and Romans, who found the seven-day cycle practical and meaningful.

The ancient Hebrews' influence also played a crucial role in establishing the seven-day week. According to the biblical account of creation, God created the world in six days and rested on the seventh, establishing a divine precedent for a seven-day cycle. This tradition was deeply ingrained in Hebrew culture and religious practices.

By the 1st century CE, the Romans had formalized the seven-day week, integrating it into their calendar system. This structure, combining astronomical observations and religious traditions, eventually spread throughout the Roman Empire and beyond, becoming the foundation of the modern seven-day week we use today.

In the Arabic and Hebrew calendars, the day begins at sunset, which contrasts with the Swahili concept of the day starting at sunrise and the Western world, where the day starts at midnight. This highlights the cultural influences on how days are numbered and identified within these different calendrical systems.

Origins of days of the week

How did Monday get its name? Meaning of Monday

Monday is named after the Moon. The Old English word for Monday was Monandæg, which translates to "Moon's day". This naming convention is quite common across various languages; for instance, in Latin, it's dies Lunae, also meaning "day of the Moon".  

Tuesday name origin

Tuesday is named after the Norse god Tiw (also known as Tyr), a god of war and sky. The Old English term Tiwesdæg directly reflects this association. The connection to Mars, the Roman god of war, can also be seen in other languages, such as French (mardi).

Why is Wednesday called Wednesday?

Wednesday is named after Odin (or Woden), the chief god in Norse mythology. The Old English Wodnesdæg translates to "Woden's day". This day is associated with Mercury in Roman mythology, which is why it's called miércoles in Spanish and mercredi in French.

Thursday name meaning

Thursday is named in honor of Thor, the Norse god of thunder. The term 'Thor's day' serves as the etymological basis for Thursday. In Old English, it was Þūnresdæg (Thunor’s day). The link to Jupiter, the Roman king of gods and god of thunder, explains the name jeudi in French and jueves in Spanish.

Friday history and meaning

Friday is named after Frigg (also known as Frigga or Freya), the Norse goddess associated with love and beauty. The Old English term Frigedæg means "Frigg's day". In Roman mythology, this day is linked to Venus, the goddess of love, which is reflected in names like viernes in Spanish and vendredi in French.

Saturday name origin

Saturday is unique among the English day names as it retains its Roman origin, specifically named after the Roman god Saturn, the Roman god of wealth and time. The Old English Sæternesdæg directly references this deity. Interestingly, in other Germanic languages, the name often refers to the Sabbath, such as Samstag in German.

Sunday - The sun's day

Sunday is named after the Sun. Icelandic uniquely retains 'only the Sun' as the name for Sunday, rejecting names derived from pagan gods. The Old English Sunnandæg translates to “Sun’s day”, reflecting its importance and reverence in various cultures. This name is consistent across many languages, highlighting the widespread significance of the Sun.

The importance of understanding day names etymology

Understanding the etymology of day names helps language learners grasp the historical context and deepens their appreciation of English. These names are more than just labels for days; they are windows into ancient beliefs, cultures and linguistic evolution. The influence of Greek and Latin names on the naming of the days of the week during the Greco-Roman tradition is particularly notable, as the classical planets from Hellenistic astrology played a significant role in this process.

Exploring the origins of the day names in English reveals a blend of mythology, history and language evolution. From the Moon to Norse gods to Roman deities, each name tells a story of cultural significance.

More blogs from Pearson

  • A parent and child sat on a sofa looking at a laptop smiling
    Four steps to make sure the transition back to school goes well
    By Donatella Fitzgerald MBE
    Reading time: 4 minutes

    As a new school year begins, teachers and parents share the same goal: helping students return to learning with confidence.

    After the long summer break, many learners are excited to see their friends again, but getting back into a school routine isn't always easy. Some students may be starting a new class, meeting a new teacher or preparing for important exams. For English language learners, returning to the classroom can also mean rebuilding confidence in using English every day.

    A smooth transition back to school can help students feel more settled, engaged and ready to learn. Here are four practical ways teachers and families can support learners as they start the academic year.

    1. Be organized and create routines

    "Organizing is what you do before you do something, so that when you do it, it's not all mixed up." – A. A. Milne

    Strong routines help students know what to expect and reduce unnecessary stress during the first few weeks of school.

    At home, families can hold a "back-to-school meeting" to agree on routines for the year ahead. This could include:

    • Getting school bags and clothes ready the evening before
    • Setting regular homework times
    • Planning family mealtimes
    • Making time for exercise and relaxation

    When everyone has a chance to contribute, it helps build routines that are realistic and easier to stick to. Writing these routines on a family planner or wall chart can also help everyone stay on track.

    For English language learners, consistent routines can be especially helpful. Predictable study times create regular opportunities to practise reading, speaking or reviewing vocabulary, helping students build confidence throughout the school year.

    2. Start bedtime routines early

    "Early to bed and early to rise, makes a man healthy, wealthy, and wise." – Benjamin Franklin

    Good sleep plays an important role in students' wellbeing, concentration and learning.

    After the holidays, it can be difficult to switch from late nights back to early mornings. Rather than making sudden changes, encourage families to gradually move bedtimes earlier by 30 to 60 minutes over several days before school starts. This makes the adjustment much easier for everyone.

    Reducing screen time before bed can also improve sleep quality. Ideally, children and adults should avoid screens for at least 30 minutes before going to sleep.

    Well-rested students are more likely to stay focused, participate in class discussions and retain new vocabulary and language skills.

    3. Talk about homework and teach organizational skills

    "When it's obvious that the goals cannot be reached, don't adjust the goals, adjust the action steps." – Confucius

    Organization is a skill that develops over time and can make a significant difference to students' success.

    As homework increases throughout the school year, parents and teachers can work together to help students develop good study habits.

    Encourage learners to:

    • Break homework into manageable tasks
    • Create a weekly study plan
    • Prioritize more challenging work when they have the most energy
    • Set realistic goals for completing assignments

    Introducing SMART goals can also help students take ownership of their learning:

    • Specific – What exactly will they do?
    • Measurable – How will they know they've succeeded?
    • Achievable – Is the goal realistic?
    • Relevant – How does it support their learning?
    • Time-bound – When will they complete it?

    Creating a quiet, organized study space at home also helps students stay focused. Parents can support learners by being available to answer questions, encouraging effort and celebrating progress—not just results.

    For English language learners, homework routines might also include reading for a few minutes in English each day, reviewing vocabulary or practicing speaking with family members or classmates.

    4. Make mealtimes quality family time

    "Kids who grow up having family dinners, when they're on their own, tend to eat more healthily." – Anne Fishel

    Busy schedules can make it difficult for families to spend time together, but sharing a meal provides a valuable opportunity to connect and talk about the day.

    Simple conversations help children reflect on their experiences and build confidence expressing themselves. Families might ask questions such as:

    • What did you enjoy at school today?
    • What made you laugh today?
    • What was something new you learned?
    • Was there anything you found challenging?

    Listening carefully and giving children your full attention shows that their thoughts and feelings matter. Even if weekday meals aren't always possible, planning time together at weekends can have lasting benefits.

    For students learning English, these conversations can also provide valuable opportunities to practice new words, describe their day and build confidence communicating outside the classroom.

    Help students start the year with confidence

    Returning to school is about more than buying new supplies or preparing lesson plans: it's about helping students feel ready to learn.

    By establishing routines, encouraging healthy habits, supporting independent study and making time for meaningful conversations, teachers and families can work together to create a positive start to the school year.

    Small, consistent actions during the first few weeks can help students settle in more quickly, rebuild confidence and develop habits that support successful learning throughout the year.

  • A man sat at a laptop studying in a library holding a pen and paper
    Do at-home tests lack real support?
    By Alice Bazzi
    Reading time: 2 minutes

    One of the most persistent concerns around at-home English testing is the perception that candidates are left largely on their own, having to navigate systems, troubleshoot issues and manage the entire experience without any meaningful support. For students already under pressure, this assumption can create hesitation and, in some cases, discourage them from choosing remote testing altogether. But today’s at-home testing experience looks very different. 

    Online tests like PTE Express provide clear, accessible preparation materials that include detailed guidance, checklists and FAQs that walk candidates through every requirement. This ensures there is no ambiguity around what is expected, from technical setup to testing conditions. 

    Before the test starts, candidates are guided through comprehensive system readiness checks. These verify:

    • Device compatibility
    • Internet stability
    • Audio and camera functionality
    • Environmental suitability

    This proactive step is vital. It significantly reduces the likelihood of disruptions on test day and ensures candidates can begin their session with confidence, knowing that everything is set up correctly.

  • A man sat in a pod chair working on laptop
    A teacher's guide to safe and ethical AI use for students
    By Charlotte Guest
    Reading time: 5 minutes

    Artificial Intelligence (AI) is becoming a normal part of education. Many students now use AI tools like ChatGPT, Gemini and Microsoft Copilot to help with homework, writing, studying and even learning new languages.

    These tools can be very helpful, but they also bring new challenges. Some students use AI to improve their understanding, while others may rely on it too much or copy its answers without thinking.

    Teachers have an important role to play. Instead of telling their students not to use AI, they can teach them to use it use it safely, responsibly and ethically. When students understand both the benefits and the risks, they can use AI to become better learners rather than simply finding shortcuts.

    What does ethical AI use mean?

    Ethical AI use means using AI in a fair, honest and responsible way.

    Students should think of AI as a learning assistant, not as someone who completes their work for them. AI can explain grammar, suggest vocabulary, give writing feedback or help students practise conversations. However, students should still make their own decisions, solve problems and create their own work.

    A simple rule to remember is:

    Use AI to support your learning, not replace it.

    This mindset helps students develop real language skills and become more confident learners.

    Talk openly about AI in the classroom

    Many students are already using AI, whether teachers ask them to or not. Because of this, it's important to create an open and honest conversation about AI rather than ignoring it.

    When students know they can ask questions without being judged, they are more likely to use AI responsibly. Explain when AI is helpful, when it should not be used and why learning still requires effort and practice.

    Every school may have different rules about AI, so make sure your students understand your expectations. If everyone knows what is allowed and what is not, there is much less confusion.

    Show students how AI can support learning

    AI works best when it helps students think, practice and improve.

    For example, students can ask AI to:

    • Explain difficult grammar rules
    • Create vocabulary quizzes
    • Suggest speaking questions
    • Practice everyday conversations
    • Check writing for grammar and spelling mistakes
    • Rewrite a text using simpler or more advanced English
    • Generate ideas before starting a writing task

    These activities encourage active learning because students are still involved in the process.

    However, AI should not be used to write essays, complete homework or answer exam questions without the student's own effort. If AI does everything, the student misses valuable opportunities to practice and improve.

    Protect students' privacy

    One of the most important lessons teachers can share is how to protect personal information online.

    Students should understand that AI tools may store conversations or use them to improve their systems. Because of this, they should never share private or sensitive information.

    Remind students not to enter:

    • Full names
    • Home addresses
    • Phone numbers
    • Passwords
    • Personal photos
    • School records
    • Private information about friends or family

    Instead, encourage students to use general examples when asking questions.

    For example, instead of sharing a real student's name in a piece of writing, they can simply say "the student" or create a fictional example.

    Learning to protect personal information is an important digital skill that goes beyond using AI.

    Teach students to question AI's answers

    AI is impressive, but it is not perfect.

    Sometimes AI gives incorrect information, misunderstands a question or even invents facts and references. Because AI often sounds confident, students may believe everything it says without checking.

    This is why critical thinking remains essential.

    Encourage students to ask themselves questions such as:

    • Does this answer make sense?
    • Can I find the same information somewhere else?
    • Would my teacher agree with this explanation?
    • Have I understood the answer or am I just copying it?

    Helping students develop these habits will make them stronger learners long after they leave the classroom.

    Encourage honesty and responsibility

    Being honest about AI use is an important part of academic integrity.

    If students use AI to brainstorm ideas, improve grammar or practice vocabulary, that can be a positive learning experience. However, they should not pretend that AI-generated work is completely their own if school policies require them to explain how AI was used.

    Teachers can make this easier by clearly explaining what is acceptable in different activities. For example, AI might be allowed for homework planning but not during assessments or exams.

    When expectations are clear, students are more likely to make responsible choices.

    Create simple classroom AI guidelines

    Instead of giving students a long list of rules, try creating a short classroom agreement together.

    You could ask students questions like:

    • When is AI useful?
    • When should we avoid using AI?
    • What does responsible AI use look like?
    • How can AI help us become better language learners?

    Together, you can create a simple agreement such as:

    • I will use AI to help me learn.
    • I will think before accepting AI's answers.
    • I will check important information.
    • I will not copy AI work and claim it as my own.
    • I will protect my personal information.
    • I will ask my teacher if I am unsure.

    When students help create the rules, they often feel more responsible for following them.

    Remember that teachers are still essential

    Some people worry that AI will replace teachers. In reality, AI cannot replace the human side of teaching.

    Teachers motivate students, answer unexpected questions, understand emotions and adapt lessons to meet individual needs. They encourage creativity, build confidence and create meaningful relationships in the classroom.

    AI can provide information, but it cannot replace encouragement, empathy or the experience that teachers bring every day.

    The best classrooms will combine the strengths of both teachers and technology.

    Supporting safe AI use in language learning

    AI is likely to remain an important part of education and language learners can benefit greatly from using it effectively. Instead of seeing AI as something to fear, teachers can help students understand how to use it safely, ethically and responsibly.

    By encouraging critical thinking, protecting privacy, promoting honesty and showing students how AI can support learning rather than replace it, we prepare them for a future where technology plays an important role.

    The goal isn't to stop students from using AI. The goal is to help them become confident, independent learners who know how to use these powerful tools wisely. With clear guidance from teachers, AI can become a valuable learning partner as students continue to develop the language skills and critical-thinking abilities they need for success.